کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
250063 | 502650 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Sodium sulfate attack on plain and blended cements Sodium sulfate attack on plain and blended cements](/preview/png/250063.png)
This paper presents an investigation into the sodium sulfate resistance of three portland cements of various compound compositions and 24 blended cements produced by replacing 10%, 20%, 30% and 40% of these cements with a fly ash and a natural pozzolan. Sulfate expansion of mortar specimens was evaluated using ASTM C1012 test procedure. No acid titration was made to change pH of the sulfate solution. In addition to 5% sodium sulfate concentration prescribed in the standard, 18 selected cements were also exposed to sodium sulfate of 3% concentration. A mathematical expression was developed to estimate the sulfate susceptibility of cements regarding their C3A, C3S/C2S ratio, mineral additive content as well as concentration of sulfate solution.
Journal: Building and Environment - Volume 42, Issue 3, March 2007, Pages 1368–1372